<template>
    <div class="header">
        <!-- 折叠按钮 -->
        <div class="collapse-btn" @click="collapseChage">
            <i v-if="!collapse" class="el-icon-s-fold"></i>
            <i v-else class="el-icon-s-unfold"></i>
        </div>
        <div class="logo">后台管理</div>
        <div class="header-right">
            <div class="header-user-con">
                <!-- 全屏显示 -->
                <div class="btn-fullscreen" @click="handleFullScreen">
                    <el-tooltip effect="dark" :content="fullscreen?`取消全屏`:`全屏`" placement="bottom">
                        <i class="el-icon-rank"></i>
                    </el-tooltip>
                </div>
                <!-- 消息中心 -->
                <div class="btn-bell">
                    <el-tooltip
                        effect="dark"
                        :content="message&&message>0?`有${message}条未读消息`:`消息中心`"
                        placement="bottom"
                    >
                        <router-link to="/message">
                            <i class="el-icon-bell"></i>
                        </router-link>
                    </el-tooltip>
                    <span class="btn-bell-badge" v-if="message"></span>
                </div>
                <!-- 用户头像 -->
                <div class="user-avator">
                    <img src="../../assets/img/img.jpg" />
                </div>
                <!-- 用户名下拉菜单 -->
                <el-dropdown class="user-name" trigger="click" @command="handleCommand">
                    <span class="el-dropdown-link">
                        {{adminInfo.name}}
                        <i class="el-icon-caret-bottom"></i>
                    </span>
                    <el-dropdown-menu slot="dropdown">
                        <el-dropdown-item divided command="updateAdmins">账号信息</el-dropdown-item>
                        <el-dropdown-item divided command="loginout">退出登录</el-dropdown-item>
                    </el-dropdown-menu>
                </el-dropdown>
            </div>
        </div>

        <!-- 修改账号信息弹出框 -->
        <el-dialog v-dialogDrag title="账号信息" :visible.sync="infoVisible" width="30%">
            <el-form ref="info" :model="info" label-width="60px">
                <el-form-item label="名称">
                    <el-input
                        v-model="info.name"
                        maxlength="30"
                        type="text"
                        minlength="2"
                        placeholder="请输入名称"
                    ></el-input>
                </el-form-item>
                <el-form-item label="账号">
                    <el-input
                        v-model="info.username"
                        maxlength="30"
                        type="text"
                        minlength="2"
                        :disabled="true"
                        placeholder="账号不可编辑"
                    ></el-input>
                </el-form-item>
                <el-form-item label="原密码">
                    <el-input
                        v-model="info.password"
                        maxlength="18"
                        type="password"
                        @input="passwordInput"
                        placeholder="请输入原密码"
                    ></el-input>
                </el-form-item>
                <el-form-item label="新密码">
                    <el-input
                        v-model="info.new_password"
                        maxlength="18"
                        type="password"
                        @input="passwordInput"
                        placeholder="请输入新密码"
                    ></el-input>
                </el-form-item>
            </el-form>
            <span slot="footer" class="dialog-footer">
                <div class="dialog-footer-but">
                    <el-button @click="infoVisible = false">取 消</el-button>
                    <el-button type="primary" @click="saveInfo">确 定</el-button>
                </div>
            </span>
        </el-dialog>
    </div>
</template>
<script>
import bus from '../common/bus';
export default {
  data () {
    return {
      infoVisible: false,
      collapse: false,
      fullscreen: false,
      message: 0,
      adminInfo: {
        name: '',
        username: '',
        ip: '',
      },
      info: {
        password: '',
        new_password: '',
        name: '',
        username: ''
      },


    };
  },
  computed: {

  },
  created () {

  },

  methods: {
    // 用户名下拉菜单选择事件
    handleCommand (command) {
      if (command == 'loginout') {
        this.$cookies.remove('adminInfo');
        this.$cookies.remove('token');
        this.$router.push('/login');
      } else if (command == 'updateAdmins') {
        this.infoVisible = true;
      }
    },
    // 侧边栏折叠
    collapseChage () {
      this.collapse = !this.collapse;
      bus.$emit('collapse', this.collapse);
    },
    // 全屏事件
    handleFullScreen () {
      let element = document.documentElement;
      if (this.fullscreen) {
        if (document.exitFullscreen) {
          document.exitFullscreen();
        } else if (document.webkitCancelFullScreen) {
          document.webkitCancelFullScreen();
        } else if (document.mozCancelFullScreen) {
          document.mozCancelFullScreen();
        } else if (document.msExitFullscreen) {
          document.msExitFullscreen();
        }
      } else {
        if (element.requestFullscreen) {
          element.requestFullscreen();
        } else if (element.webkitRequestFullScreen) {
          element.webkitRequestFullScreen();
        } else if (element.mozRequestFullScreen) {
          element.mozRequestFullScreen();
        } else if (element.msRequestFullscreen) {
          // IE11
          element.msRequestFullscreen();
        }
      }
      this.fullscreen = !this.fullscreen;
    },

    /***
     * 密码输入事件，解决不能输入问题
     */
    passwordInput () {
      this.$forceUpdate()
    },

    /***
   * 保存账号信息
   */
    saveInfo () {
      if (this.info.name == '') {
        this.$message.error('请输入名称');
        return false;
      }
      if (this.info.password != '' && this.info.new_password == '') {
        this.$message.error('请输入新密码');
        return false;
      } else if (this.info.password == '' && this.info.new_password != '') {
        this.$message.error('请输入原密码');
        return false;
      } else if (this.info.password != '' && this.info.new_password == this.info.password) {
        this.$message.error('原密码和新密码不能相同');
        return false;
      }
      let that = this;
      this.api.updateAdmins(this.info, function (result) {
        that.info = result.data;
        that.info.password = '';
        that.info.new_password = '';
        that.infoVisible = false;
        that.adminInfo = result.data;
        that.$message.success('修改成功');
      });
    },
  },




  mounted () {
    if (document.body.clientWidth < 1500) {
      this.collapseChage();
    }
    this.adminInfo = this.$cookies.get('adminInfo');
    this.info = this.$cookies.get('adminInfo');
    this.info.password = '';
    this.info.new_password = '';
  }
};
</script>
<style scoped>
.header {
    position: relative;
    box-sizing: border-box;
    width: 100%;
    height: 70px;
    font-size: 22px;
    color: #fff;
}
.collapse-btn {
    float: left;
    padding: 0 21px;
    cursor: pointer;
    line-height: 70px;
}
.header .logo {
    float: left;
    width: 250px;
    line-height: 70px;
}
.header-right {
    float: right;
    padding-right: 50px;
}
.header-user-con {
    display: flex;
    height: 70px;
    align-items: center;
}
.btn-fullscreen {
    transform: rotate(45deg);
    margin-right: 5px;
    font-size: 24px;
}
.btn-bell,
.btn-fullscreen {
    position: relative;
    width: 30px;
    height: 30px;
    text-align: center;
    border-radius: 15px;
    cursor: pointer;
}
.btn-bell-badge {
    position: absolute;
    right: 0;
    top: -2px;
    width: 8px;
    height: 8px;
    border-radius: 4px;
    background: #f56c6c;
    color: #fff;
}
.btn-bell .el-icon-bell {
    color: #fff;
}
.user-name {
    margin-left: 10px;
}
.user-avator {
    margin-left: 20px;
}
.user-avator img {
    display: block;
    width: 40px;
    height: 40px;
    border-radius: 50%;
}
.el-dropdown-link {
    color: #fff;
    cursor: pointer;
}
.el-dropdown-menu__item {
    text-align: center;
}
</style>
